US4529425A - Plant for producing gaseous oxygen - Google Patents

Plant for producing gaseous oxygen Download PDF

Info

Publication number
US4529425A
US4529425A US06/516,840 US51684083A US4529425A US 4529425 A US4529425 A US 4529425A US 51684083 A US51684083 A US 51684083A US 4529425 A US4529425 A US 4529425A
Authority
US
United States
Prior art keywords
pressure column
plant
high pressure
liquid
column
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US06/516,840
Other languages
English (en)
Inventor
Brian A. McNeil
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Air Products and Chemicals Inc
Original Assignee
Air Products and Chemicals Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Air Products and Chemicals Inc filed Critical Air Products and Chemicals Inc
Assigned to AIR PRODUCTS AND CHEMICALS, INC. reassignment AIR PRODUCTS AND CHEMICALS, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MC NEIL, BRIAN A.
Application granted granted Critical
Publication of US4529425A publication Critical patent/US4529425A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04472—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using the cold from cryogenic liquids produced within the air fractionation unit and stored in internal or intermediate storages
    • F25J3/04496—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using the cold from cryogenic liquids produced within the air fractionation unit and stored in internal or intermediate storages for compensating variable air feed or variable product demand by alternating between periods of liquid storage and liquid assist
    • F25J3/04503—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using the cold from cryogenic liquids produced within the air fractionation unit and stored in internal or intermediate storages for compensating variable air feed or variable product demand by alternating between periods of liquid storage and liquid assist by exchanging "cold" between at least two different cryogenic liquids, e.g. independently from the main heat exchange line of the air fractionation and/or by using external alternating storage systems
    • F25J3/04509—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using the cold from cryogenic liquids produced within the air fractionation unit and stored in internal or intermediate storages for compensating variable air feed or variable product demand by alternating between periods of liquid storage and liquid assist by exchanging "cold" between at least two different cryogenic liquids, e.g. independently from the main heat exchange line of the air fractionation and/or by using external alternating storage systems within the cold part of the air fractionation, i.e. exchanging "cold" within the fractionation and/or main heat exchange line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
    • F25J3/04309—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of nitrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04406—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system
    • F25J3/04412—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system in a classical double column flowsheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04642—Recovering noble gases from air
    • F25J3/04648—Recovering noble gases from air argon
    • F25J3/04654—Producing crude argon in a crude argon column
    • F25J3/04666—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system
    • F25J3/04672—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system having a top condenser
    • F25J3/04678—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system having a top condenser cooled by oxygen enriched liquid from high pressure column bottoms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
    • F25J2235/42—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being nitrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
    • F25J2235/50—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being oxygen
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S62/00—Refrigeration
    • Y10S62/912—External refrigeration system
    • Y10S62/913—Liquified gas

Definitions

  • This invention relates to a plant for producing gaseous oxygen.
  • a plant for producing gaseous oxygen which plant comprises a heat exchanger for cooling feed air, a double distillation column having a high pressure column for receiving at least part of said feed air, and a low pressure column, a liquid oxygen (LOX) storage vessel communicating with said low pressure column, means to bring liquid oxygen from said LOX storage vessel into heat exchange with vapour from said high pressure column to provide reflux for said high pressure column, and a liquid storage vessel communicating with said high pressure column, and means to return liquid from said liquid storage vessel to said column as reflux, characterised in that said plant further comprises an expander arranged to expand vapour from said high pressure column and pass the expanded vapour through said heat exchanger and further characterised in that said plant comprises means to control the flow of vapour through said expander.
  • LOX liquid oxygen
  • the expander is arranged to expand nitrogen from the top of said high pressure column.
  • the liquid storage vessel is arranged to receive liquid nitrogen.
  • FIG. 1 is a simplified flow sheet of one embodiment of a plant in accordance with the invention.
  • FIG. 2 is a simplified flow sheet of a second embodiment of a plant in accordance with the invention.
  • feed air 1 is compressed by compressor 2 and passed through line 3 to one of a pair of molecules sieves 4 where water vapour and carbon dioxide are adsorbed.
  • the dry, carbon dioxide free air passes through line 5 and is cooled in heat exchanger 6 before entering the high pressure column 8 of a double distillation column generally identified by reference level 7.
  • the high pressure column 8 separates the dry, carbon dioxide free air into crude liquid oxygen (LOX) 9 and gaseous nitrogen which leaves the high pressure column 8 through conduct 10.
  • LOX crude liquid oxygen
  • the crude LOX leaves the high pressure column through line 11 and is sub-cooled in heat exchanger 12.
  • the sub-cooled crude LOX leaves heat exchanger 12 through line 13 and, after expansion at valve 14 is introduced into the low pressure column 15 of the double distillation column 7 where it is separated into liquid oxygen (LOX) 16 and a gaseous waste stream which leaves the low pressure column 15 through line 17.
  • the gaseous waste stream is heated in heat exchanges 18, 12 and 6 before being vented to atmosphere.
  • a liquid oxygen storage tank 19 is connected to the bottom of the low pressure column 15 via a reversible line 20 and a storage line 21.
  • the liquid oxygen storage tank 19 also communicates with the reversible line 20 via a pump 22 and a return line 23.
  • the gaseous nitrogen which leaves the high pressure column 8 through line 10 can be passed either through line 24 or through both lines 24 and 25.
  • Line 25 passes through part of heat exchanger 6 and communicates with an expander 27.
  • the outlet of expander 27 is connected to line 17 by line 28.
  • a valve 26 is situated in line 25 upstream of the expander 27. Flow through the expander 27 can be varied by adjusting the inlet guide vanes on the expander 27 whilst valve 26 is primarily used to totally shut-off the flow through expander 27.
  • Line 24 is connected to reboiler/condenser 29 situated in the bottom of the low pressure column 15. Liquid nitrogen leaves the reboiler/condenser 29 through line 30 and part is returned through line 31 to high pressure column 8 as reflux whilst the balance is passed through line 32 to heat exchanger 18 where it is subcooled. The subcooled liquid nitrogen leaves heat exchanger 18 through line 33 which communicates with line 34 and reversible line 35. The line 34 communicates with the low pressure column 15 via an expansion valve 36.
  • a liquid nitrogen (LIN) storage tank 37 communicates with the reversible line 35 via a storage line 38 and via a pump 39 and return line 40.
  • LIN liquid nitrogen
  • Gaseous oxygen leaves the low pressure column 15 through line 41 and is used to cool dry, carbon dioxide free air in heat exchanger 6.
  • valve 26 As valve 26 is closed the temperature of the air at the cold end of heat exchanger 6 will rise although the total molar flow of feed to the high pressure column 8 will remain constant.
  • the additional nitrogen entering reboiler/condenser 29 is condensed by the evaporation of an additional quantity of liquid oxygen supplied from LOX storage tank 19 via line 23 and reversible line 20.
  • valve 26 is opened fully and the expander flow is established at a substantially higher level than for the base case, pump 39 is started, valves 43 and 44 are opened and valves 42 and 45 closed.
  • the expander 27 provides additional refrigeration for heat exchanger 6 to compensate for the loss of refrigeration during maximum GOX output and the gas enters the high pressure column 8 at a lower temperature than before.
  • the amount of liquid produced in the reboiler/condenser 29 is sufficient to provide the reflux for the high pressure column 8 and part of the reflux for the low pressure column 15. Additional, reflux for the low pressure column 15 is provided by the liquid nitrogen from LIN storage tank 37 supplied via line 40, reversible line 35 and line 34. Again the flow of liquid nitrogen through line 34 remains substantially constant so that the (L/V) of the low pressure column 15 remains substantially constant throughout the operation.
  • the expander 27 can be shut down completely. This is only possible with a plant which does not incorporate reversing heat exchangers for removing moisture and carbon dioxide from the air. Reversing heat exchangers could be used but, in such an embodiment, the expander 27 would have to be in continuous operation.
  • each of the parts corresponding to a part shown in FIG. 1 is identified by the same reference numeral as shown in FIG. 1.
  • the plant comprises an argon recovery column 100 provided with a reflux condenser 101 situated in an evaporator 102. Feed for the argon recovery column 100 is passed from the low pressure column 15 through line 103. Crude gaseous argon leaves the top of the argon recovery column 100 through line 104 and is condensed in reflux condenser 101. Part of the liquefied crude argon is returned to the argon recovery column 100 through line 105 as reflux whilst the balance is passed through line 106 for further purification.
  • Liquid rich in oxygen is returned from the base of argon recovery column 100 to the low pressure column 15 via line 107.
  • the crude gaseous argon is condensed in reflux condenser 101 by heat exchange with part of the crude LOX from the bottom of the high pressure column which is expanded through valve 108 and introduced into evaporator 102.
  • Liquid and vapour from evaporator 102 are passed through lines 109 and 110 respectively and, after expansion through valves 111 and 112 respectively, are introduced into the low pressure column 15 through line 113 and 114 as shown.
  • Table 1 sets out flow and pressure conditions at points A to O marked on FIG. 2 during minimum gaseous oxygen (GOX) output, average GOX output, and maximum GOX output.
  • GOX gaseous oxygen
  • the plant could be operated with constant gaseous oxygen production and variable air flow to take advantage of low power tariffs at night. However, rapid change in the air flow cannot be made.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation By Low-Temperature Treatments (AREA)
US06/516,840 1982-08-24 1983-07-25 Plant for producing gaseous oxygen Expired - Fee Related US4529425A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB08224276A GB2125949B (en) 1982-08-24 1982-08-24 Plant for producing gaseous oxygen
GB8224276 1982-08-24

Publications (1)

Publication Number Publication Date
US4529425A true US4529425A (en) 1985-07-16

Family

ID=10532491

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/516,840 Expired - Fee Related US4529425A (en) 1982-08-24 1983-07-25 Plant for producing gaseous oxygen

Country Status (8)

Country Link
US (1) US4529425A (de)
EP (1) EP0102190A3 (de)
JP (1) JPS5938573A (de)
KR (1) KR910010162B1 (de)
BR (1) BR8303956A (de)
CA (1) CA1212310A (de)
GB (1) GB2125949B (de)
ZA (1) ZA835420B (de)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4731102A (en) * 1985-08-12 1988-03-15 Daidousanso Co., Ltd. Oxygen gas production apparatus
US4732595A (en) * 1985-08-23 1988-03-22 Daidousanso Co., Ltd. Oxygen gas production apparatus
US5058387A (en) * 1989-07-05 1991-10-22 The Boc Group, Inc. Process to ultrapurify liquid nitrogen imported as back-up for nitrogen generating plants
US5084081A (en) * 1989-04-27 1992-01-28 Linde Aktiengesellschaft Low temperature air fractionation accommodating variable oxygen demand
US5144808A (en) * 1991-02-12 1992-09-08 Liquid Air Engineering Corporation Cryogenic air separation process and apparatus
US5224336A (en) * 1991-06-20 1993-07-06 Air Products And Chemicals, Inc. Process and system for controlling a cryogenic air separation unit during rapid changes in production
US5265429A (en) * 1992-02-21 1993-11-30 Praxair Technology, Inc. Cryogenic air separation system for producing gaseous oxygen
US5291737A (en) * 1991-08-07 1994-03-08 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process or apparatus for distilling air and application in feeding gas to a steel mill
US5333463A (en) * 1992-07-29 1994-08-02 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Production and installation for the production of gaseous nitrogen at several different purities
US5437160A (en) * 1993-04-29 1995-08-01 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and installation for the separation of air
US5505052A (en) * 1993-06-07 1996-04-09 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and unit for supplying a gas under pressure to an installation that consumes a constituent of air
US5526647A (en) * 1994-07-29 1996-06-18 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and installation for the production of gaseous oxygen under pressure at a variable flow rate
US5664438A (en) * 1996-08-13 1997-09-09 Praxair Technology, Inc. Cryogenic side column rectification system for producing low purity oxygen and high purity nitrogen
US5953937A (en) * 1995-07-21 1999-09-21 Linde Aktiengesellschaft Process and apparatus for the variable production of a gaseous pressurized product
EP1065458A1 (de) * 1999-06-28 2001-01-03 Praxair Technology, Inc. Kryogenisches Rektifikationssystem zur Herstellung von Sauerstoff mit variabler Produktionsrate
US6357259B1 (en) * 2000-09-29 2002-03-19 The Boc Group, Inc. Air separation method to produce gaseous product
US20050172666A1 (en) * 2002-07-09 2005-08-11 Alain Guillard Method of operating a production plant and production plant
US20050210916A1 (en) * 2004-03-29 2005-09-29 Prentice Alan L Process and apparatus for the cryogenic separation of air
US20060260357A1 (en) * 2003-03-31 2006-11-23 Air Products And Chemicals, Inc. Apparatus for cryogenic air distillation
US20070037893A1 (en) * 2003-10-29 2007-02-15 Bradford Stuart R Process to transport a methanol or hydrocarbon product
US7228715B2 (en) 2003-12-23 2007-06-12 L'air Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Cryogenic air separation process and apparatus
US20080115531A1 (en) * 2006-11-16 2008-05-22 Bao Ha Cryogenic Air Separation Process and Apparatus
CN102072612A (zh) * 2010-10-19 2011-05-25 上海加力气体有限公司 N型模式节能制气方法及n型模式节能制气装置
US20130098106A1 (en) * 2010-07-05 2013-04-25 Benoit Davidian Apparatus and process for separating air by cryogenic distillation
CN114593358A (zh) * 2022-01-21 2022-06-07 杭州制氧机集团股份有限公司 一种与空分装置耦合进行储能生产的方法及其装置

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61190277A (ja) * 1985-02-16 1986-08-23 大同酸素株式会社 高純度窒素および酸素ガス製造装置
GB8524598D0 (en) * 1985-10-04 1985-11-06 Boc Group Plc Liquid-vapour contact
GB2198513B (en) * 1986-11-24 1990-09-19 Boc Group Plc Air separation
JPH0328682A (ja) * 1989-06-27 1991-02-06 Kobe Steel Ltd 空気分離方法および装置
US5152149A (en) * 1991-07-23 1992-10-06 The Boc Group, Inc. Air separation method for supplying gaseous oxygen in accordance with a variable demand pattern
FR2699992B1 (fr) * 1992-12-30 1995-02-10 Air Liquide Procédé et installation de production d'oxygène gazeux sous pression.
EA005346B1 (ru) 2001-08-15 2005-02-24 Шелл Интернэшнл Рисерч Маатсхаппий Б.В. Добыча нефти третичными методами в сочетании с процессом конверсии газа
JP5244491B2 (ja) * 2008-07-29 2013-07-24 エア・ウォーター株式会社 空気分離装置
CN102778105B (zh) * 2012-08-06 2015-02-18 济南鲍德气体有限公司 一种制氧机快速启动装置及方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3605422A (en) * 1968-02-28 1971-09-20 Air Prod & Chem Low temperature frocess for the separation of gaseous mixtures

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1250848B (de) * 1967-09-28 Linde Aktiengesellschaft, Wiesbaden Verfahren und Vorrichtung zur Tieftemperaturzerlegung von Luft bei Sauerstoffabnahmeschwankungen
US2708831A (en) * 1953-04-09 1955-05-24 Air Reduction Separation of air
US3174293A (en) * 1960-11-14 1965-03-23 Linde Eismasch Ag System for providing gas separation products at varying rates
DE2557453C2 (de) * 1975-12-19 1982-08-12 Linde Ag, 6200 Wiesbaden Verfahren zur Gewinnung von gasförmigem Sauerstoff
DE2605647A1 (de) * 1976-02-12 1977-08-18 Linde Ag Verfahren und vorrichtung zur erzeugung von gasfoermigem sauerstoff durch zweistufige tieftemperaturrektifikation von luft
GB1576910A (en) * 1978-05-12 1980-10-15 Air Prod & Chem Process and apparatus for producing gaseous nitrogen
GB2061478B (en) * 1979-10-23 1983-06-22 Air Prod & Chem Method and cryogenic plant for producing gaseous oxygen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3605422A (en) * 1968-02-28 1971-09-20 Air Prod & Chem Low temperature frocess for the separation of gaseous mixtures

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4731102A (en) * 1985-08-12 1988-03-15 Daidousanso Co., Ltd. Oxygen gas production apparatus
US4732595A (en) * 1985-08-23 1988-03-22 Daidousanso Co., Ltd. Oxygen gas production apparatus
US5084081A (en) * 1989-04-27 1992-01-28 Linde Aktiengesellschaft Low temperature air fractionation accommodating variable oxygen demand
US5058387A (en) * 1989-07-05 1991-10-22 The Boc Group, Inc. Process to ultrapurify liquid nitrogen imported as back-up for nitrogen generating plants
US5144808A (en) * 1991-02-12 1992-09-08 Liquid Air Engineering Corporation Cryogenic air separation process and apparatus
US5224336A (en) * 1991-06-20 1993-07-06 Air Products And Chemicals, Inc. Process and system for controlling a cryogenic air separation unit during rapid changes in production
US5291737A (en) * 1991-08-07 1994-03-08 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process or apparatus for distilling air and application in feeding gas to a steel mill
US5265429A (en) * 1992-02-21 1993-11-30 Praxair Technology, Inc. Cryogenic air separation system for producing gaseous oxygen
US5333463A (en) * 1992-07-29 1994-08-02 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Production and installation for the production of gaseous nitrogen at several different purities
US5437160A (en) * 1993-04-29 1995-08-01 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and installation for the separation of air
US5592834A (en) * 1993-04-29 1997-01-14 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and installation for the separation of air
US5901580A (en) * 1993-04-29 1999-05-11 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and installation for the separation of air
US5505052A (en) * 1993-06-07 1996-04-09 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and unit for supplying a gas under pressure to an installation that consumes a constituent of air
US5566556A (en) * 1993-06-07 1996-10-22 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and unit for supplying a gas under pressure to an installation that consumes a constituent of air
US5526647A (en) * 1994-07-29 1996-06-18 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and installation for the production of gaseous oxygen under pressure at a variable flow rate
US5953937A (en) * 1995-07-21 1999-09-21 Linde Aktiengesellschaft Process and apparatus for the variable production of a gaseous pressurized product
US5664438A (en) * 1996-08-13 1997-09-09 Praxair Technology, Inc. Cryogenic side column rectification system for producing low purity oxygen and high purity nitrogen
EP1065458A1 (de) * 1999-06-28 2001-01-03 Praxair Technology, Inc. Kryogenisches Rektifikationssystem zur Herstellung von Sauerstoff mit variabler Produktionsrate
US6357259B1 (en) * 2000-09-29 2002-03-19 The Boc Group, Inc. Air separation method to produce gaseous product
US7502667B2 (en) * 2002-07-09 2009-03-10 L'air Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Method of operating a production plant and production plant
US20050172666A1 (en) * 2002-07-09 2005-08-11 Alain Guillard Method of operating a production plant and production plant
US7954339B2 (en) * 2003-03-31 2011-06-07 Air Products & Chemicals, Inc. Apparatus for cryogenic air distillation
US20060260357A1 (en) * 2003-03-31 2006-11-23 Air Products And Chemicals, Inc. Apparatus for cryogenic air distillation
US20070037893A1 (en) * 2003-10-29 2007-02-15 Bradford Stuart R Process to transport a methanol or hydrocarbon product
US7228715B2 (en) 2003-12-23 2007-06-12 L'air Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Cryogenic air separation process and apparatus
EP2031329A1 (de) 2003-12-23 2009-03-04 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Verfahren zur Tieftemperaturzerlegung von Luft
US20050210916A1 (en) * 2004-03-29 2005-09-29 Prentice Alan L Process and apparatus for the cryogenic separation of air
US20080115531A1 (en) * 2006-11-16 2008-05-22 Bao Ha Cryogenic Air Separation Process and Apparatus
US20130098106A1 (en) * 2010-07-05 2013-04-25 Benoit Davidian Apparatus and process for separating air by cryogenic distillation
CN102072612A (zh) * 2010-10-19 2011-05-25 上海加力气体有限公司 N型模式节能制气方法及n型模式节能制气装置
CN114593358A (zh) * 2022-01-21 2022-06-07 杭州制氧机集团股份有限公司 一种与空分装置耦合进行储能生产的方法及其装置

Also Published As

Publication number Publication date
GB2125949B (en) 1985-09-11
JPS5938573A (ja) 1984-03-02
GB2125949A (en) 1984-03-14
JPS6151233B2 (de) 1986-11-07
ZA835420B (en) 1984-03-28
EP0102190A3 (de) 1985-03-27
KR910010162B1 (ko) 1991-12-17
EP0102190A2 (de) 1984-03-07
KR840005544A (ko) 1984-11-14
CA1212310A (en) 1986-10-07
BR8303956A (pt) 1984-04-24

Similar Documents

Publication Publication Date Title
US4529425A (en) Plant for producing gaseous oxygen
US4526595A (en) Plant for producing gaseous nitrogen
US5953937A (en) Process and apparatus for the variable production of a gaseous pressurized product
CA2089913C (en) Cryogenic air separation system for producing gaseous oxygen
US4615716A (en) Process for producing ultra high purity oxygen
US4901533A (en) Process and apparatus for the liquefaction of a natural gas stream utilizing a single mixed refrigerant
US6336345B1 (en) Process and apparatus for low temperature fractionation of air
US5941098A (en) Method and plant for supplying a variable flow rate of a gas from air
US4699642A (en) Purification of carbon dioxide for use in brewing
JPH0816580B2 (ja) 常態はガス状の炭化水素混合物を過冷却する方法
US5551258A (en) Air separation
JP3256250B2 (ja) 可変量のガス状酸素を製造する空気精留方法及び設備
US5526647A (en) Process and installation for the production of gaseous oxygen under pressure at a variable flow rate
US9797654B2 (en) Method and device for oxygen production by low-temperature separation of air at variable energy consumption
US2959021A (en) Process for air separation by liquefaction and rectification
US6098425A (en) Thermodynamic separation
US4356013A (en) Split pressure feed for the selective production of pure oxygen from air
US5309721A (en) Air separation
US5586451A (en) Process and installation for the production of oxygen by distillation of air
US4526596A (en) Process for recovering butane and propane from crude gas
EP0029656A1 (de) Verfahren und kryogenische Anlage für die Herstellung gasförmigen Sauerstoffs
US3947259A (en) Thermodynamically improved system for producing gaseous oxygen and gaseous nitrogen
KR20230154441A (ko) Co2 부화 스트림 액화 방법
US4461634A (en) Separation of gas mixtures by partial condensation
US3327490A (en) Recombining separated gaseous nitrogen and vaporized liquid nitrogen with air to produce a constant gaseous feed rate

Legal Events

Date Code Title Description
AS Assignment

Owner name: AIR PRODUCTS AND CHEMICALS, INC., P.O. BOX 538, AL

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MC NEIL, BRIAN A.;REEL/FRAME:004159/0100

Effective date: 19830718

Owner name: AIR PRODUCTS AND CHEMICALS, INC., PENNSYLVANIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MC NEIL, BRIAN A.;REEL/FRAME:004159/0100

Effective date: 19830718

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

FPAY Fee payment

Year of fee payment: 4

FPAY Fee payment

Year of fee payment: 8

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
FP Lapsed due to failure to pay maintenance fee

Effective date: 19970716

STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362